package com.itheima.servlet;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;

public class ServletDemo04 extends HttpServlet {
    //定义一个用户名的成员变量
    private String username;


    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
   synchronized (this) {

       // String username=null;
       username = req.getParameter("username");

       try {
           Thread.sleep(3000);
       } catch (InterruptedException e) {
           e.printStackTrace();
       }


       PrintWriter pw = resp.getWriter();
       pw.println("welcome:" + username);
       pw.close();
   }
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doGet(req,resp);
    }
}
